Ebanz mabtens



F. M'RTENS.l NUT LOCK.`

` APPLICATION FlLED JUNE 16, 1919.

:1 ,$20,259. Patented Oct. 28, 1919.

FRANZ MARTENS, or ELBERFELn- GERMANY.

NUT-LOCK.

Specicaton of Letters Patent.'

Patenten oet. es, isis.

Application filed .Tune 16, 1919. Serial No. 304,673.

To all whom z't may concern:

Be it known that 1,' FRANZ MRTENS, a citizen of the German Republic,andresid- -ing at Elberfeld, Germany, have invented Certain Improvementsin Nut Locks, of which the following is a specification. This inventionrelates to nut-locks and'its object is to provide a device ot' pressurein the screw-thread by pressing a washer otl especial form between twonuts or one nut 'and a bearing.

Another object is to provide a form of the washer designed to be iilledup by consistent fat, that will be pressed into the thread by screwingthe nuts. strong strains of the washers they are provided withprojections.

The preferred forms ot the invention have been shown in the accompanyingdrawings.

In said drawings:

Figure 1 is a section through a lockingwashenand a side-view of the nutsarranged upon a holt, showing the washer 11 clamped between the nutslandfilled up by consistent fat, 2. i

Fig. 2 is a view similar to Fig. 1, showing two washers, 12.

Fig. 3 shows a washer 13 with a central opening, the wall of which isserewthreaded so as to engage the thread of the bolt and serving as anut. l y

Fig. l is a View similar to Fig. 1, showing ythe same form ot the washerengaged between a nut B and a bearing I). said nut having a reducedportion "4 pushing against the bearing and avoiding a further deflectionot' the washer.

Fig. 5 is a view similar to Fig. 1 with,

In order to avoid too.

provided with a disk 51 and Fig. 8 is a view similar to Fig. l furnishedwith a disk with a joining-piece. f

Referring to the figures as a matter of reference A designates a bolt onwhich are threaded nuts B and C, pressing against a bearing D.

In the excavations of the disks or washers consistent :t'at 2, can beintroduced.

All washers are provided with a Central opening, through wliieh the boltor the nut. as is shown in Figs. 1 and-l` is guided. The washers areengaged by pressing the counternut against the nut or the nut -againstthe bearing.

Ot course various changes ina \v be made in the size and proportions.ot' the loek without departing from the spirit. o1' .sarrilieing theadvantages ot' the invention.

, YhatI claim as new is:h

l. A nut lock comprising a nut. an elastheupped washer having an openingtherethrough and adapted to tit about a bolt. and means adaptedto engageabout the holt in the opening ot' the washer and forming with the nut ashoulder against whieh the washer is adapted to bind.

2. A nut lock comprising an elastirl cupped washer having an openingtherethrough and adapted to tit about a bolt. said washer adapted to hepressed b v a mit threaded on the bolt vfor trietionally holding the nutagainst the threads on the holt. and a disk withinthe eupped portion otthe washer having a Central opening t'or the passage ot' the bolt andprovided with a flange fitting within the opening in the washer.

In testimony that I Claim the Yforegoing as in v invention I have signedniv name in presenee ot two subseribing witnesses.

FRANZ Ml'tn'inxs.

Witnesses EMU. liiotii, ELSE PUNznL.

